Water or Blood
Hadeon A Rai
He has watched many many years of history, was a personal friend of the last Emperor, and was with him when they left Umar for the last time, his Master was the one guiding that escape. He is 80 years old. He is a senior Librarian of some renown, some say he leads his own cabal.
He is the uncle to the current Lord Protector of Aru though he has not seen him in decades.
He traveled south with the reclamation, survived and returned becoming an adviser to the new emperor and traveling with him as he walks the land.